CN203178236U - Novel magnetic flux leakage test sensor - Google Patents
Novel magnetic flux leakage test sensor Download PDFInfo
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- CN203178236U CN203178236U CN 201320071346 CN201320071346U CN203178236U CN 203178236 U CN203178236 U CN 203178236U CN 201320071346 CN201320071346 CN 201320071346 CN 201320071346 U CN201320071346 U CN 201320071346U CN 203178236 U CN203178236 U CN 203178236U
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Abstract
The utility model relates to the technical field of equipment defect test, in particular to a novel magnetic flux leakage test sensor. The novel magnetic flux leakage test sensor comprises a first hall element, a second hall element and a magnetic flux leakage test sensor housing, wherein the first hall element is clung to the bottom of the magnetic flux leakage test sensor housing; the first hall element and the bottom of the magnetic flux leakage test sensor housing are arranged in parallel; the second hall element is vertical to the first hall element; the first hall element is used for measuring a defective leakage magnetic field vertical signal; and the second hall element is used for measuring a defective leakage magnetic field horizontal signal. Through the embodiment of the utility model, two leakage magnetic field signals in different directions can be received and converted, and the collected two signals are input into a signal adder for addition and analysis to obtain the defective leakage magnetic field signals, so that the sensitivity and the accuracy of the sensor are improved.
Description
Technical field
The utility model is relevant for equipment deficiency detection technique field, particularly about a kind of novel Magnetic Flux Leakage Inspecting sensor.
Background technology
Oil storage is the visual plant of oil depot, harbour and the storage of raw materials of petrochemical complex unit and intermediate product, and tank bottom is positioned at the bottom of storage tank, the storage medium that upper surface is contacting hydrous, and lower surface contacts with tank base, is the main concentration zones of storage tank corrosion.Traditional poor sonic detection method may be missed defective and consuming time, and base plate requires totally to be not suitable for detecting the base plate of band coating.Magnetic Flux Leakage Inspecting (MFL) can overcome above-mentioned drawback, has quick, accurate, economic dispatch characteristics.Because base plate much all is that high-quality mild carbon steel is made, and has good magnetic characteristic, therefore, the Magnetic Flux Leakage Inspecting method progressively becomes the important means that tank bottom detects.
The Magnetic Flux Leakage Inspecting principle is to magnetize when being detected steel plate, defective in the material can cause that as the existence of crackle, corrosion or corrosion hole the magnetic resistance of material part increases, and causes that the distortion of field leaks out surface of the work, survey this stray field with magnet-sensitive element, thereby obtain defect information.The whether suitable repeatability that is having a strong impact on detection sensitivity and detection of the magnetization situation of tank bottom, because reasons in structure, the magnetization of tank bottom can not be adopted the Overall magnetization pattern of pipe crawling device, can only carry out magnetization and the detection of subrange to it, by the repeatedly no omission survey of scanning realization monoblock steel plate.
Sensors such as employing Hall element are surveyed this magnetic field and are obtained magnetic leakage signal, magnetic leakage signal are fed back to computing machine calculate, and can just can obtain the correlated characteristic of defective by analyzing magnetic leakage signal.Storage tank Magnetic Flux Leakage Inspecting sensor device now, its Hall element is laterally put, and only can receive conversion perpendicular to the stray field signal of steel plate, and accuracy and sensitivity are lower.
The utility model content
Problem for the defective magnetic field detection inconvenience that solves tank bottom in the prior art has proposed a kind of novel Magnetic Flux Leakage Inspecting sensor, the magnetic field on detection of vertical and the horizontal both direction simultaneously, make detect more accurate.
The utility model provides a kind of novel Magnetic Flux Leakage Inspecting sensor, comprises,
First Hall element, second Hall element, Magnetic Flux Leakage Inspecting sensor housing;
Described first Hall element is attached at the bottom of described Magnetic Flux Leakage Inspecting sensor housing, with the parallel placement in described bottom, described second Hall element is perpendicular to described first Hall element, described first Hall element is used for measuring the defect magnetic flux leakage field vertical signal, and described second Hall element is used for measuring the defect magnetic flux leakage field horizontal signal.
As a further aspect of a kind of novel Magnetic Flux Leakage Inspecting sensor described in the utility model, described first Hall element becomes the vertical relation of contact or becomes the spatial vertical relation with second Hall element.
As another further aspect of a kind of novel Magnetic Flux Leakage Inspecting sensor described in the utility model, described Magnetic Flux Leakage Inspecting sensor comprises many group Hall element groups, and wherein each group Hall element group comprises first Hall element and second Hall element.
By the utility model embodiment, can receive the stray field signal on two kinds of different directions of conversion, with two kinds of signal input signal totalizers that collect computational analysis that superposes, finally obtain the stray field signal of defective, strengthened susceptibility and the accuracy of sensor device; Can be widely used in every field such as chemical industry, petrochemical industry, the energy, light industry, pharmacy, refrigeration, power, environmental protection, biochemistry, food, machinery, labor safety.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Figure 1 shows that the synoptic diagram of a kind of novel Magnetic Flux Leakage Inspecting sensor of the utility model;
Figure 2 shows that the synoptic diagram of the utility model embodiment Magnetic Flux Leakage Inspecting sensor in detection;
Figure 3 shows that the embodiment synoptic diagram of many group Hall element groups in the utility model embodiment Magnetic Flux Leakage Inspecting sensor housing;
The circuit structure diagram of the utility model embodiment Hall element group shown in Figure 4;
Fig. 5 a is depicted as the signal graph of the horizontal direction defect magnetic flux leakage field that obtains by Hall element among the utility model embodiment;
Fig. 5 b is the signal graph of the vertical direction defect magnetic flux leakage field that obtains by Hall element among the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Be illustrated in figure 1 as the synoptic diagram of a kind of novel Magnetic Flux Leakage Inspecting sensor of the utility model.
Comprise first Hall element, 101, the second Hall elements 102, Magnetic Flux Leakage Inspecting sensor housing 103.
Described first Hall element 101 is attached at the bottom of described Magnetic Flux Leakage Inspecting sensor housing 103, with the parallel placement in described bottom, described second Hall element 102 is perpendicular to described first Hall element 101, described first Hall element 101 is used for measuring the defect magnetic flux leakage field vertical signal, and described second Hall element 102 is used for measuring the defect magnetic flux leakage field horizontal signal.
The vertical relation of described first Hall element 101 and 102 one-tenth contacts of second Hall element or one-tenth spatial vertical relation.
Described Magnetic Flux Leakage Inspecting sensor comprises many group Hall element groups, and wherein each group Hall element group comprises first Hall element and second Hall element.
Be illustrated in figure 2 as the synoptic diagram of the utility model embodiment Magnetic Flux Leakage Inspecting sensor in detection, comprise armature 201 among the figure, magnet 202, pole shoe 203, steel plate 204, sensor housing 205, Hall element group 206, wherein, armature 201, magnet 202, pole shoe 203, steel plate 204 is used for forming the local magnetized magnetic circuit, and sensor of the present utility model is positioned at tank bottom central authorities, measures defect magnetic flux leakage field vertical signal and horizontal signal respectively by mutually perpendicular Hall element group.
Be illustrated in figure 3 as the embodiment synoptic diagram of many group Hall element groups in the utility model embodiment Magnetic Flux Leakage Inspecting sensor housing.Comprising Magnetic Flux Leakage Inspecting sensor housing 301, Hall element group 302 further comprises first Hall element 3021 and second Hall element 3022 in this Hall element group.
The circuit structure diagram of the utility model embodiment Hall element group as shown in Figure 4.
Wherein adopt Hall element UGN3503 as the Magnetic Flux Leakage Inspecting sensor, detect defect magnetic flux leakage field, a drive test amount defect magnetic flux leakage field horizontal signal, a drive test amount defect magnetic flux leakage field vertical signal by arranging two-way Hall element UGN3503.Become voltage signal behind the defect magnetic flux leakage field process Hall element UGN3503, after process electric capacity filters HFS, enter and carry out signal amplification computing in the amplifier 741.The level that two-way is amplified respectively and vertical signal are realized the stack of magnetic field levels signal and vertical signal is amplified through totalizer 741 computing that superposes then.
Being depicted as the signal graph of the horizontal direction defect magnetic flux leakage field that obtains by Hall element among the utility model embodiment as Fig. 5 a, is the signal graph of the vertical direction defect magnetic flux leakage field that obtains by Hall element among the utility model embodiment as Fig. 5 b.
The beneficial effects of the utility model are, can receive the stray field signal on two kinds of different directions of conversion, with two kinds of signal input signal totalizers that collect computational analysis that superposes, finally obtain the stray field signal of defective, strengthened susceptibility and the accuracy of sensor device.Can be widely used in every field such as chemical industry, petrochemical industry, the energy, light industry, pharmacy, refrigeration, power, environmental protection, biochemistry, food, machinery, labor safety.
Those skilled in the art can also recognize the various illustrative components, blocks (illustra tive logical block) that the utility model embodiment lists, and unit and step can be passed through electronic hardware, computer software, or both combinations realize.Be the clear replaceability (interchangeability) of showing hardware and software, above-mentioned various illustrative components (illustrative components), unit and step have been described their function generally.Such function is to realize depending on the designing requirement of specific application and total system by hardware or software.Those skilled in the art can be for every kind of specific application, and can make ins all sorts of ways realizes described function, but this realization should not be understood that to exceed the scope of the utility model embodiment protection.
Various illustrative logical block described in the utility model embodiment, or the unit can pass through general processor, digital signal processor, special IC (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the design of above-mentioned any combination realizes or operates described function.General processor can be microprocessor, and alternatively, this general processor also can be any traditional processor, controller, microcontroller or state machine.Processor also can realize by the combination of calculation element, for example digital signal processor and microprocessor, a plurality of microprocessors, Digital Signal Processor Core of one or more microprocessors associatings, or any other similarly configuration realize.
Method described in the utility model embodiment or the step of algorithm can directly embed hardware, the software module of processor execution or the two combination.Software module can be stored in the storage medium of other arbitrary form in RAM storer, flash memory, ROM storer, eprom memory, eeprom memory, register, hard disk, moveable magnetic disc, CD-ROM or this area.Exemplarily, storage medium can be connected with processor, so that processor can read information from storage medium, and can deposit write information to storage medium.Alternatively, storage medium can also be integrated in the processor.Processor and storage medium can be arranged among the ASIC, and ASIC can be arranged in the user terminal.Alternatively, processor and storage medium also can be arranged in the different parts in the user terminal.
In one or more exemplary designs, the described above-mentioned functions of the utility model embodiment can realize in hardware, software, firmware or this three's combination in any.If realize in software, these functions can be stored on the media with computer-readable, or are transmitted on the media of computer-readable with one or more instructions or code form.The computer-readable media comprises the computer storage medium and is convenient to make allows computer program transfer to other local telecommunication media from a place.Storage medium can be the useable medium that any general or special computer can access.For example, such computer readable media can include but not limited to RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage device, or other anyly can be used for carrying or storage can be read the program code of form by general or special computer or general or special processor with instruction or data structure and other media.In addition, any connection can suitably be defined as the computer-readable media, for example, if software is by a concentric cable, optical fiber computer, twisted-pair feeder, Digital Subscriber Line (DSL) or also being comprised in the defined computer-readable media with wireless mode transmission such as for example infrared, wireless and microwaves from a web-site, server or other remote resource.Described video disc (disk) and disk (disc) comprise Zip disk, radium-shine dish, CD, DVD, floppy disk and Blu-ray Disc, and disk is usually with the magnetic duplication data, and video disc carries out the optical reproduction data with laser usually.Above-mentioned combination also can be included in the computer-readable media.
Above-described embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is embodiment of the present utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (3)
1. a novel Magnetic Flux Leakage Inspecting sensor is characterized in that comprising,
First Hall element, second Hall element, Magnetic Flux Leakage Inspecting sensor housing;
Described first Hall element is attached at the bottom of described Magnetic Flux Leakage Inspecting sensor housing, with the parallel placement in described bottom, described second Hall element is perpendicular to described first Hall element, described first Hall element is used for measuring the defect magnetic flux leakage field vertical signal, and described second Hall element is used for measuring the defect magnetic flux leakage field horizontal signal.
2. a kind of novel Magnetic Flux Leakage Inspecting sensor according to claim 1 is characterized in that described first Hall element becomes the vertical relation of contact or becomes the spatial vertical relation with second Hall element.
3. a kind of novel Magnetic Flux Leakage Inspecting sensor according to claim 1 is characterized in that described Magnetic Flux Leakage Inspecting sensor comprises many group Hall element groups, and wherein each group Hall element group comprises first Hall element and second Hall element.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320071346 CN203178236U (en) | 2013-02-07 | 2013-02-07 | Novel magnetic flux leakage test sensor |
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| CN 201320071346 CN203178236U (en) | 2013-02-07 | 2013-02-07 | Novel magnetic flux leakage test sensor |
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| CN203178236U true CN203178236U (en) | 2013-09-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108351222A (en) * | 2015-10-28 | 2018-07-31 | 阿尔卑斯电气株式会社 | position detecting device |
| CN108784644A (en) * | 2018-07-12 | 2018-11-13 | 东北大学秦皇岛分校 | A kind of opticianry parameter measurement system |
| CN109655090A (en) * | 2017-10-10 | 2019-04-19 | 迈来芯电子科技有限公司 | Redundant sensor fault detection |
-
2013
- 2013-02-07 CN CN 201320071346 patent/CN203178236U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108351222A (en) * | 2015-10-28 | 2018-07-31 | 阿尔卑斯电气株式会社 | position detecting device |
| US20180216925A1 (en) * | 2015-10-28 | 2018-08-02 | Alps Electric Co., Ltd. | Position detection device |
| CN109655090A (en) * | 2017-10-10 | 2019-04-19 | 迈来芯电子科技有限公司 | Redundant sensor fault detection |
| US11085976B2 (en) | 2017-10-10 | 2021-08-10 | Melexis Technologies Sa | Redundant sensor fault detection |
| CN108784644A (en) * | 2018-07-12 | 2018-11-13 | 东北大学秦皇岛分校 | A kind of opticianry parameter measurement system |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20220207 |